package com.pankai.cn.config;

import com.pankai.cn.shrio.realms.CustomerRealm;
import org.apache.shiro.authc.credential.HashedCredentialsMatcher;
import org.apache.shiro.realm.Realm;
import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;

import java.util.HashMap;
import java.util.Map;

/**
 * @author pankai
 * @create 2020-11-26 15:01
 *
 */
@Configuration
public class ShiroConfig {

    // 1、创建shiroFilter  负责拦截所有的请求
    @Bean
    public ShiroFilterFactoryBean getShiroFilterFactoryBean(DefaultWebSecurityManager defaultWebSecurityManager){
        ShiroFilterFactoryBean shiroFilterFactoryBean = new ShiroFilterFactoryBean();

        // 给filter设置安全管理器
        shiroFilterFactoryBean.setSecurityManager(defaultWebSecurityManager);

        // 配置系统受限资源
        // 配置系统公共资源
        Map<String,String> map = new HashMap<String, String>();

        // anon设置为公共资源，不需要认证和授权
        map.put("/user/login","anon");
        map.put("/user/register","anon");
        map.put("/register.jsp","anon");
        // authc代表请求这个资源需要认证和授权
        map.put("/**","authc");

        shiroFilterFactoryBean.setFilterChainDefinitionMap(map);

        // 默认认证界面路径
        shiroFilterFactoryBean.setLoginUrl("/login.jsp");

        return shiroFilterFactoryBean;
    }

    /**
     * 2、创建安全管理器
     * @return
     */
    @Bean
    public DefaultWebSecurityManager getDefaultWebSecurityManager(Realm realm){
        DefaultWebSecurityManager defaultWebSecurityManager = new DefaultWebSecurityManager();
        defaultWebSecurityManager.setRealm(realm);
        return defaultWebSecurityManager;
    }

    /**
     * 3、创建自定义realm
     */
    @Bean
    @Primary
    public Realm getRealm(){
        CustomerRealm customerRealm = new CustomerRealm();
        // 修改凭证校验匹配器
        HashedCredentialsMatcher credentialsMatcher = new HashedCredentialsMatcher();
        // 设置加密算法为md5
        credentialsMatcher.setHashAlgorithmName("MD5");
        // 设置散列次数
        credentialsMatcher.setHashIterations(1024);
        customerRealm.setCredentialsMatcher(credentialsMatcher);
        return customerRealm;
    }

}
